Best Seller | DAYTON 1WDN5 Gravity Vent,36 In,Base 40 1/2 In Sq Roof Vent Hood, Exhaust Airflow @ 0.100 in SP 7,251 cfm, Hood Height 16 in, Hood Length 68 in, Hood Width 60 in, Cutout Length 37 1/2 in, Cutout Width 37 1/2 in, Housing Material Steel, Assembly Partially Assembled, Compatible Curb Grainger Part Number... ... more DAYTON 1WDN5 Gravity Vent,36 In,Base 40 1/2 In Sq Roof Vent Hood, Exhaust Airflow @ 0.100 in SP 7,251 cfm, Hood Height 16 in, Hood Length 68 in, Hood Width 60 in, Cutout Length 37 1/2 in, Cutout Width 37 1/2 in, Housing Material Steel, Assembly Partially Assembled, Compatible Curb Grainger Part Number... | | $1,465.99 go to store |